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I used step 7 and went online to talk to the PLC from the computer. I tried to monitor some logic or DB block (click the "glass" icon for monitor variables online). It seems just work several seconds then no response and popup an error message "connection disrupted".Click help button show "Help on message 33:16654". Due to this problem I can't debug the program.

Now the situation is we have full redundant remote station profibus address=3,4,5,6,7. Additional profibus address=1,8 represent the laser weighting systems for two units. They are connected in just one profibus system,that is, no redundant.These two profibus 1&8 are integrated in the whole system through HWconfiguration. But they are not really connected into the system now. Is it the reason to cause the problem? As from the help, one suggestion is "check any remote connections". If that's the reason, do I need to delete them from the HWconfiguration? How about the corresponding program?

Thank you!

Any suggestion can be forward to bwu@enersul.com

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regarding to your inquiry we would like to inform you. Please see the error list of STEP 7 with the remedies for each error number. This list you will find in the internet by the customer support (please use the link).

We recommend also the following steps:- Delete the SDBs in the SIMATIC Manager and save and compile the hardware config again.- If you have error message, make also the consistency check in the hw config.- If you have no error message, load the new generated SDBs in the CPU again.

If you are online with the CPU, please switch to the online view in the SIMATIC Manager and open the hardware configuration in the online view, so that you can see the hw config by online. Here you should see, which moduls are failed or not connected (with red marked).